tire pressure monitor. - Page 2 - Toyota RAV4 Forums
4.3 Exterior Tires, Wheels, Lights, Spoilers, Flares, Bars, Tow Hitches, etc.

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#11 (permalink) Old 07-17-2006, 11:34 AM
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Just as a note: The Mexico's edition of RAV4 (at least the base) does not have TPM...

I guess I can change wheels without having to deal with the sensors 8) (as soon as I can have the money to spend)
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#12 (permalink) Old 07-17-2006, 02:29 PM
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My tire pressure monitor went off last week. When I check the pressure in my tires my drivers side rear was at 24lbs after a 20 minute drive. Put air in the next day and it was down to 28.5 after 1 week. The dealer checked it today (vehicle's in for new radio) and they found a nail. $18 dollar fix.

What is the pressure the warning goes off at? Figuring it was 24 after 20 minutes of driving and the light was on before I started (did the kick test before I started) do ya suppose the monitor is set for 20lbs?

Damn I hope this question wasn't asked...
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#13 (permalink) Old 07-17-2006, 02:41 PM
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Quote:
Originally Posted by Janos
What is the pressure the warning goes off at? Figuring it was 24 after 20 minutes of driving and the light was on before I started (did the kick test before I started) do ya suppose the monitor is set for 20lbs?

Damn I hope this question wasn't asked...
To quote the Oracle of Toyota....

Quote:
After all tire pressure sensing transmitters are activated, the Low Tire Pressure Warning Light will come ON whenever the tire pressure in any of the tires falls below 24 – 27 psi (1.65 – 1.9 kgm/cm2, 165 – 185 kPa).
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#14 (permalink) Old 07-17-2006, 06:23 PM
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Thanks summer.
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#15 (permalink) Old 12-25-2012, 03:51 PM
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T P M

Where are the batteries in the TPM any idea as to price? Thank you jz
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#16 (permalink) Old 12-25-2012, 05:07 PM
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Where are the batteries in the TPM any idea as to price? Thank you jz
The battery is inside the tire, a sealed part of the TPM. It cannot be recharged nor replaced. Only the whole unit can be replaced. A real PITA, but they do last for as much as 7 years.

(I wonder if it is really true that they cannot be recharged by doing some surgery on the unit. Any electrical wizards here? James! What do you think?)
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#17 (permalink) Old 12-25-2012, 08:18 PM
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The battery is inside the tire, a sealed part of the TPM. It cannot be recharged nor replaced. Only the whole unit can be replaced. A real PITA, but they do last for as much as 7 years.

(I wonder if it is really true that they cannot be recharged by doing some surgery on the unit. Any electrical wizards here? James! What do you think?)
I could replace the battery in a TPMS sensor, as could anyone skilled in soldering. All you would need is a 2450 lithium cell with solder tabs and some time. These types of lithium cells cannot be recharged.




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#18 (permalink) Old 12-26-2012, 12:21 AM
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Holy cow! That's amazing, James. It will be a few years before I need this information, but it is good for the rest.

Maybe there should be a sticky for 'hacks' that make our RAV4 lives better?

Great stuff. Thanks again!
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#19 (permalink) Old 12-26-2012, 09:49 AM
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System is worthless anyway.
All this cost, reprogramming every 6 months when you change wheel setups, dead batteries, extra sets of sensors for extra wheel sets...all to accommodate people who do not know how to, or refuse to, check tire pressure. Even after all this expense and hassle, the light goes off, you have no way of knowing which tire is low technically- so you still need to get out a tire pressure gauge and manually check them all. Rubbish.

2009 RAV4 Sport 4WD V6 SAP
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#20 (permalink) Old 12-26-2012, 03:24 PM
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System is worthless anyway.
All this cost, reprogramming every 6 months when you change wheel setups, dead batteries, extra sets of sensors for extra wheel sets...all to accommodate people who do not know how to, or refuse to, check tire pressure. Even after all this expense and hassle, the light goes off, you have no way of knowing which tire is low technically- so you still need to get out a tire pressure gauge and manually check them all. Rubbish.
Hi blackdog,

I know that it is blasphemy, to some folks, to criticize anything that these cars have; but I agree completely with you.

I could not have said it better,

Jerry Baumchen
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